Amy Worden of the Philadelphia Inquirer reports that Pennsylvania will soon announce a plan demanding a further reduction in mercury emissions from coal-burning power plants over the next decade. This move will make Pennsylvania the fifth state to enact guidelines stricter than those imposed by the federal government. The hope is to cutback emissions by 10%:

The Pennsylvania proposal would require the state's 36 coal-fired plants to reduce emissions by 80 percent in four years and 90 percent by 2015. The U.S. Environmental Protection Agency has ordered a 70 percent cap on emissions by 2018, although full compliance is not expected until years later.